Have mine shooting 70/30 with my Unsingle barrel. I could get it to probably 60/40 with some adjustment and me shooting it. Every shooter is going to be different with perhaps the same setting. Hope this helps.

Mine shoots 80/20 on the top and about 55/45 on the bottom. I shoot doubles with it, so it works out good. Just shoot the top barrel first. You have to check each gun out for true POI. With you shooting it. Can't let someone else tell you where your gun is shooting.